Preparation for the Hereafter

Question regarding hereafter:

What can I do today to prepare when I pass to go beyond earth boundaries?

In a nutshell study what is the subtle body is, for what will be left as you then. Once you key into that, or intuit into that, gradually focus your attention on caring for and increasing the awareness of that.

An example can be that of a person who is to migrate permanently to Mars, where he knows that once he gets on the spaceship and blastoff, he will not be able to return to the earth.

Which of his possessions can he take to the other planet? What documents should he have? Who are the love ones that he will leave behind?

This is what he should focus on in the months before departure, so that his attention shifts to the other place and to his reduced self because not just possessions will have to be left behind but relationships and reliances as well.